EP4089775A1 - Ensemble batterie et procédé d'assemblage d'ensemble batterie - Google Patents

Ensemble batterie et procédé d'assemblage d'ensemble batterie Download PDF

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Publication number
EP4089775A1
EP4089775A1 EP21187077.9A EP21187077A EP4089775A1 EP 4089775 A1 EP4089775 A1 EP 4089775A1 EP 21187077 A EP21187077 A EP 21187077A EP 4089775 A1 EP4089775 A1 EP 4089775A1
Authority
EP
European Patent Office
Prior art keywords
battery
section
post assembly
assembly
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21187077.9A
Other languages
German (de)
English (en)
Inventor
Fangfang PAN
Kui Li
Bowei XU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CALB Co Ltd
Original Assignee
CALB Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CALB Co Ltd filed Critical CALB Co Ltd
Publication of EP4089775A1 publication Critical patent/EP4089775A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the disclosure relates to a battery technology, particularly to a battery assembly and an assembling method of the battery assembly.
  • batteries need to be connected in series and in parallel during the assembling process. Due to the structural limitation of the battery itself, the connection of the posts between the batteries in the battery assembling process is challenging in the art.
  • the present disclosure provides a battery assembly and an assembling method of the assembled battery to improve the structure of the battery assembly.
  • a battery assembly includes a first battery, a second battery, and a busbar.
  • the first battery includes a first post assembly.
  • the second battery includes a second post assembly.
  • the busbar is formed integrally, and is bent into a first section, a second section and a third section. Both ends of the second section are respectively connected to the first section and the third section, the first section and the third section are disposed oppositely, the first section is connected to the first post assembly, and the third section is connected to the second post assembly.
  • an assembling method of a battery assembly includes the following steps. Providing a first battery, wherein the first battery includes a first post assembly. Providing a second battery, wherein second battery includes a second post assembly. Providing a busbar, wherein the busbar is formed integrally and is bent into a first section, a second section and a third section, wherein both ends of the second section are respectively connected to the first section and the third section, and the first section and the third section are disposed oppositely. Connecting the first section to the first post assembly, and connecting the third section to the second post assembly.
  • connection In particular, a reference to “the” object or “a” and “an” object is intended to denote also one of a possible plurality of such objects.
  • the terms “connect”, “fix” should be broadly interpreted, for example, the term “connect” can be “fixedly connect”, “detachably connect”, “integrally connect”, “electrically connect” or “signal connect”.
  • the term “connect” also can be “directly connect” or “indirectly connect via a medium”.
  • the battery assembly includes a first battery 1, a second battery 2 and a busbar 3.
  • the first battery 1 includes a first post assembly 20.
  • the second battery 2 includes a second post assembly 50.
  • the busbar 30 is formed integrally, and is bent into a first section 31, a second section 32 and a third section 33. Both ends of the second section 32 are respectively connected to the first section 31 and the third section 33, the first section 31 and the third section 33 are disposed oppositely, the first section 31 is connected to the first post assembly 20, and the third section 33 is connected to the second post assembly 50.
  • the battery assembly according to an embodiment of the present disclosure includes the first battery 1, the second battery 2 and the busbar 30, and the busbar 30 makes the electrical connection between the first battery 1 and the second battery 2. Since the busbar 30 is an integrated U-shaped structure, it is convenient to make the connection between the first post 20 assembly and the second post assembly 50.
  • the first battery 1 and the second battery 2 are disposed side by side.
  • the busbar 30 formed as one piece only needs to make the connection between the first post assembly 20 and the second post assembly 50, and the location of the first post assembly 20 and the second post assembly 50 is not limited here.
  • the first battery 1 includes two opposite first surfaces 12 and four second surfaces 13 disposed around the first surfaces 12, and the first post assembly 20 is disposed on one of the first surfaces 12.
  • the second battery 2 includes two opposite third surfaces 42 and four fourth surfaces 43 disposed around the third surfaces 42, and the second post assembly 50 is disposed on one of the third surfaces 42.
  • the one of the first surfaces 12 and the one of the third surfaces 42 are disposed opposite to each other, such that the first section 31 is located on a side of the one of the first surfaces 12 where the first post assembly 20 is provided, and the third section 33 is located on a side of the one of the third surfaces 42 where the second post assembly 50 is provided, such that it is convenient to make the connection between the first section 31 and the first post assembly 20 and the connection between the third section 33 and the second post assembly 50.
  • the one of the first surfaces 12 and the one of the third surfaces 42 are disposed opposite to each other. That is, the one of the first surfaces 12 of the first battery 1 and the one of the third surfaces 42 of the second battery 2 are disposed side by side. Therefore, in the direction perpendicular to the first surface 12, the orthographic projection of the first surface 12 provided with the first post assembly 20 is a surface, and the area of this surface is equal to the area of the first surface 12 itself. In the direction perpendicular to the third surface 42, the orthographic projection of the third surface 42 provided with the second post assembly 50 is a surface, and the area of this surface is equal to the area of the third surface 42 itself.
  • the area of the first surface 12 is greater than the area of the second surface 13, and the area of the third surface 42 is greater than the area of the fourth surface 43.
  • the first post assembly 20 is disposed on the larger surface of the first battery 1
  • the second post assembly 50 is disposed on the larger surface of the second battery 2. That is, the first battery 1 and the second battery 2 are assembled together such that the larger surface faces the larger surface, and the busbar 30 has a U-shaped structure, so it is convenient to make the connection between the first post assembly 20 and the second post assembly 50.
  • the first battery 1 includes a first battery body 10.
  • the first battery body 10 includes two opposite first surfaces 12 and four second surfaces 13 disposed around the first surface 12, such that the first battery body 10 approximately has the structure of a first rectangular.
  • the second battery 2 includes a second battery body 40.
  • the second battery body 40 includes two opposite third surfaces 42 and four fourth surfaces 43 disposed around the third surface 42, such that the second battery body 40 approximately has the structure of a second rectangular.
  • the appearance of the first battery 1 is approximately the first rectangular
  • the appearance of the second battery 2 is approximately the second rectangular.
  • the two opposite first surfaces 12 are the large surfaces of the first battery body 10, and the four second surfaces 13 are the small surfaces of the first battery body 10.
  • the four second surfaces 13 include two pairs of small surfaces, namely a first pair of small surfaces extending along the length direction of the first battery body 10, and a second pair of small surfaces extending along the width direction of the first battery body 10. And the area of the first pair of small surfaces is larger than the area of the second pair of small surfaces, but both are smaller than the area of the large surfaces.
  • the first post assembly 20 is disposed on the first surface 12 so as to ensure that the first post assembly 20 has a reliable supporting surface to ensure the stability of the first post assembly 20.
  • the two opposite third surfaces 42 are the large surfaces of the second battery body 40
  • the four fourth surfaces 43 are the small surfaces of the second battery body 40.
  • the four fourth surfaces 43 include two pairs of small surfaces, namely a first pair of small surfaces extending in the length direction of the second battery body 40, and a second pair of small surfaces extending in the width direction of the second battery body 40.
  • the area of the first pair of small surfaces is larger than the area of the second pair of small surfaces, but both are smaller than the area of the large surfaces.
  • the second post assembly 50 is disposed on the third surface 42 so as to ensure that the second post assembly 50 has a reliable supporting surface to ensure the stability of the second post assembly 50.
  • the busbar 30 is bent into the first section 31, the second section 32, and the third section 33. Both ends of the second section 32 are respectively connected to the first section 31 and the third section 33, and the first section 31 and the third section 33 are disposed oppositely, such that the busbar 30 is bent into a U-shaped structure.
  • first battery 1 and the second battery 2 side by side indicates that the first battery 1 and the second battery 2 are assembled together, at this time, the first battery 1 and the second battery 2 may be stacked vertically (from bottom to top) or horizontally (from left to right), the disclosure is not limited thereto.
  • the second section 32 and the fourth surface 43 are substantially in parallel, and the second section 32 and the second surface 13 are also substantially in parallel, which ensures that the first section 31 and the third section 33 respectively correspond to the first surface 12 and the third surface 42, such that it is convenient for the first section 31 and the third section 33 to connect the first post assembly 20 and the second post assembly 50, respectively.
  • the second section 32 and the second surface 13 are substantially in parallel, and the substantial parallelism here is to ignore manufacturing margins and the like.
  • the second section 32 may be parallel to the first pair of small surfaces extending in the length direction of the first battery body 10, or the second section 32 may be parallel to the second pair of small surfaces extending in the width direction of the first battery body 10.
  • the first section 31 is substantially parallel to the first surface 12. That is, when the end of the first post assembly 20 connected to the first section 31 is parallel to the first surface 12, the first section 31 and the first surface 12 are made substantially in parallel. At this time, the angle between the first section 31 and the second section 32 is a right angle. Of course, in some embodiments, it is not excluded that the first section 31 is disposed obliquely to the first surface 12. In this case, the angle between the first section 31 and the second section 32 may be an acute angle or an obtuse angle.
  • the third section 33 and the third surface 42 are substantially in parallel. That is, when the end of the second post assembly 50 connected to the third section 33 is parallel to the third surface 42, the third section 33 and the third surface 42 may be substantially in parallel. At this time, the angle between the third section 33 and the second section 32 is a right angle. Of course, in some embodiments, it is not excluded that the third section 33 is disposed obliquely to the third surface 42. In this case, the angle between the third section 33 and the second section 32 may be an acute angle or an obtuse angle.
  • the first section 31 and the second section 32 are substantially perpendicular, and the second section 32 and the third section 33 are approximately perpendicular, ensuring that it is convenient for the busbar 30 to connect the first post assembly 20 and the second post assembly 50, and the battery configuration space may be arranged effectively. If the substantial perpendicularity indicates that margins are ignored, the first section 31 and the second section 32 may be disposed perpendicularly to each other, and the second section 32 and the third section 33 can be disposed perpendicularly to each other.
  • the included angle between the first section 31 and the second section 32 is 80 degrees to 100 degrees, and the included angle between the first section 31 and the second section 32 is 85 degrees to 95 degrees.
  • the included angle between the second section 32 and the third section 33 is 80 degrees to 100 degrees, and the included angle between the second section 32 and the third section 33 is 85 degrees to 95 degrees.
  • the substantial perpendicularity between the first section 31 and the second section 32 is to take into account the practical processing margins and the likes. That is, if the processing and manufacturing margins are ignored, the angle between the first section 31 and the second section 32 is a right angle.
  • the included angle between the first section 31 and the second section 32 is 80 degrees to 100 degrees, further, the included angle between the first section 31 and the second section 32 is 85 degrees to 95 degrees. As shown in FIG.
  • the approximate perpendicularity between the first section 31 and the second section 32 is to show the overall extension direction of the two (the first and second sections 31, 32), and do not specifically indicate that there must be a right-angle transition between the first section 31 and the second section 32.
  • the transition of the second section 32 and the third section 33 is also similar to the connection relationship between the first section 31 and the second section 32, and thus is not repeated herein for brevity.
  • the orthographic projection of the second section 32 on the plane where the first surface 12 is located is outside the first surface 12
  • the orthographic projection of the second section 32 on the plane where the third surface 42 is located is outside the third surface 42. That is, one end of the first section 31 needs to extend outside the peripheral edges of the first battery body 10 and the second battery body 40, in this way, the second section 32 is prevented from being in the three-dimensional space where the peripheral edges of the first battery body 10 and the second battery body 40 are located, thereby facilitating subsequent connections.
  • the first post assembly 20 is disposed on one of the first surfaces 12 away from the second battery 2, and the second post assembly 50 is disposed on one of the third surfaces 42 adjacent to the first battery 1. That is, the second section 32 needs to straddle the first battery body 10 to ensure that the third section 33 is connected to the second post assembly 50.
  • the first post assembly 20 is disposed on the other one of the first surfaces 12 adjacent to the second battery 2
  • the second post assembly 50 is disposed on the other one of the third surfaces 42 away from the first battery 1. That is, the second section 32 needs to straddle the second battery body 40 to ensure that the third section 33 is connected to the second post assembly 50.
  • the first post assembly 20 is disposed on the other one of the first surfaces 12 adjacent to the second battery 2, and the second post assembly 50 is disposed on one of the third surfaces 42 adjacent to the first battery 1. That is, the first post assembly 20 and the second post assembly 50 are directly opposite to each other.
  • the busbar 30 is clamped between the first battery body 10 and the second battery body 40 to facilitate the connection of the first section 31 and the third section 33 respectively with the first post assembly 20 and the second post assembly 50.
  • the vertical projection of the second section 32 on the plane where the first surface 12 is located is outside the first surface 12
  • the vertical projection of the second section 32 on the plane where the third surface 42 is located is outside the third surface 42.
  • the vertical projection of the second section 32 on the plane where the first surface 12 is located is inside the first surface 12
  • the vertical projection of the second section 32 on the plane where the third surface 42 is located is inside the third surface 42.
  • first post assemblies 20 and two second post assemblies 50 there are two busbars 30.
  • the two busbars 30 respectively connect two pairs of the first post assembly 20 and the second post assembly 50.
  • one of the busbars 30 may be connected to one pair of the first post assembly 20 and the second post assembly 50, and the other one of the busbars 30 may be connected to the post assembly of the third battery. The details may be determined based on whether the batteries are connected in series or in parallel, which is not limited here.
  • the two first post assemblies 20 may be disposed on the same first surface 12.
  • the two first post assemblies 20 may be respectively disposed on the two different first surfaces 12.
  • the two second post assemblies 50 may be disposed on the same third surface 42.
  • the two second post assemblies 50 may be respectively disposed on the two different third surfaces 42.
  • the first section 31 is welded to the first post assembly 20, and the third section 33 is welded to the second post assembly 50, so as to ensure the stability of the connection.
  • the thickness of the welded part of the first section 31 and the first post assembly 20 is smaller than the thickness of the second section 32, such that it is convenient to make the connection between the welding of the first section 31 and the first post assembly 20.
  • the first section 31 is connected and thinned, such that the energy used for welding may weld the first section 31 to the first post assembly 20 rapidly.
  • the first section 31 may be partially thinned. Of course, it does not exclude that the first section 31 may be thinned as a whole.
  • the thickness of the welding part of the third section 33 and the second post assembly 50 is smaller than the thickness of the second section 32, such that it is convenient to make the connection between the welding of the third section 33 and the second post assembly 50.
  • the third section 33 is connected and thinned, such that the energy used for welding may weld the third section 33 and the second post assembly 50 rapidly.
  • the third section 33 may be partially thinned. Of course, it does not rule out that the third section 33 may be thinned as a whole.
  • the busbar 30 is formed integrally, which facilitates processing and has high structural stability.
  • the busbar 30 is a metal sheet.
  • the busbar 30 and the first post assembly 20 are one structure as a whole. That is, the busbar 30 and the first post assembly 20 are an integrated structure that has a relatively simple structure with higher stability.
  • the integrated structure may include a plurality of independent parts that are formed before they are fixed and connected to each other. That is, the busbar 30 and the first post assembly 20 have been connected before the batteries are assembled, instead of being connected during the battery assembly process.
  • the integrated structure may also be a structure formed integrally. That is, the busbar 30 and the first post assembly 20 are formed integrally.
  • the busbar 30 and the second post assembly 50 are an integrated structure. That is, the busbar 30 and the first post assembly 50 are an integrated structure that has a relatively simple structure with higher stability.
  • the busbar 30 and the second post assembly 50 have been connected before the batteries are assembled, instead of being connected during the battery assembling process.
  • the integrated structure may also be a structure formed integrally. That is, the busbar 30 and the second post assembly 50 are formed integrally.
  • the first battery body 10 includes a cell 14 and a casing 15.
  • the cell 14 is connected to the first post assembly 20.
  • the cell 14 is located in the casing 15.
  • a first recess 11 and the first post assembly 20 are both disposed on the casing 15, which not only causes convenient installation but also a relatively simple structure.
  • the casing 15 may be adapted to install the first post assembly 20.
  • the material of the casing 15 may be stainless steel or aluminum, which has good corrosion resistance and sufficient strength.
  • the thickness of the casing 15 is uniform, which not only provides strong structural stability but also facilitates processing.
  • the casing 15 includes a first casing element 151 and a second casing element 152.
  • the second casing element 152 is connected to the first casing element 151 to enclose the cell 14.
  • the first casing element 151 and the second casing element 152 are disposed separately, which facilitates the installation of the cell 14 and it is convenient for the processing.
  • the first casing element 151 and the second casing element 152 may both be formed with a receiving chamber 153.
  • the cell 14 is in a chamber formed by the two receiving chambers 153.
  • the depths of the receiving chambers 153 of the first casing element 151 and the second casing element 152 may be the same with or different from each other, which is not limited here.
  • the first casing element 151 is a flat plate
  • the second casing element 152 is formed with the receiving chamber 153 in which the cell 14 is located.
  • the configuration of the flat plate may facilitate subsequent connections and has less difficulty in processing.
  • a protruding edge 154 is provided on the circumferential edge of the second casing element 152, and the first casing element 151 is welded to the protruding edge 154 to ensure the reliable welding of the first casing element 151 and the second casing element 152, so as to provide the stability of the connection.
  • the arrangement of the protruding edge 154 is mainly to ensure that the welding area is increased, thereby improving the stability of the welding.
  • the circumferential edge of the first casing element 151 may also be provided with the protruding edge 154, and the protruding edge 154 of the first casing element 151 is welded to the protruding edge 154 of the second casing element 152.
  • the protruding edge 154 may be understood as a flange, for example, a flange that is formed on the peripheral edge of a flat plate and extends outwards, or a flange that is formed on a side wall of a structure with the receiving chamber 153, wherein at this time, the flange is approximately perpendicular to the side wall.
  • this configuration can be referred to as a reference, such that the protruding edge 154 of the first casing element 151 and the protruding edge 154 of the second casing element 152 may face each other directly, thereby facilitating the connection.
  • the cell 14 includes a cell body 141 and a tab 142, and the tab 142 extends from the cell body 141 in the length direction.
  • the tab 142 is connected to the first post assembly 20.
  • the first post assembly 20 may be disposed at the end portion of the first battery body 10 to facilitate the connection and to make full use of the space of the battery in the length direction.
  • the tab 142 may be directly connected to the first post assembly 20, that is, the tab 142 may be directly welded to the first post assembly 20, or the tab 142 may be connected to the first post assembly 20 with a metal transition piece.
  • the specific connection may adopt welding, and the use of riveting and the likes are also not excluded, the disclosure is not limited thereto.
  • the cell body 141 includes two or more pole pieces
  • the tab 142 includes two or more single tabs.
  • the single tabs respectively extend from the corresponding pole piece, the width of the single tab is smaller than the width of the pole piece, and a plurality of single tabs are stacked to form the tab 142 and are connected to the first post assembly 20.
  • the tab 142 may be welded to the first post assembly 20.
  • the Monolithic tabs are made of metal foil with good electrical and thermal conductivity, such as aluminum, copper, nickel, etc.
  • first post assemblies 20 there are two first post assemblies 20.
  • the two first post assemblies 20 are respectively a positive post assembly and a negative post assembly.
  • tabs 142 there are also two tabs 142.
  • the two tabs 142 are respectively a positive tab and a negative tab.
  • the positive post assembly is connected to the positive tab
  • the negative post assembly is connected to the negative tab.
  • the first post assembly 20 is insulated from the casing 15.
  • an insulating member may be adopted for insulation between the two, or an insulating coating may be adopted for such insulation, which is not limited here, and can be selected according to actual needs.
  • the structure and configuration of the second battery body 40 and the second post assembly 50 may be referred to the first post assembly 20 and the first battery body 10 mentioned above and thus is not repeated here. In some embodiments, it is not excluded that the first battery 1 and the second battery 2 have exactly the same structure.
  • the first recess 11 may be provided on the first battery body 10, and the first recess 11 and the first post assembly 20 may be respectively located on the two first surfaces 12.
  • the first recess 11 may be adapted to accommodate the second post assembly 50 of the second battery 2 or may be adapted to accommodate the post assembly of the third battery.
  • the projections of the first recess 11 and the first post assembly 20 in a direction perpendicular to the first battery body 10 at least partially overlap, such that when the first battery 1 and the second battery 2 are assembled together, the first battery 1 and the second battery 2 are aligned with each other to ensure that the second post assembly 50 may be accommodated in the first recess 11 more reliably.
  • a second recess 41 may also be provided on the second battery body 40.
  • the second recess 41 may be adapted to accommodate the second post assembly 50 of the second battery 2 or the post assembly of the third battery, to which the disclosure does not limited, as it is about how to embody it. If the post assembly of the battery protrudes from the battery body, a recess may be provided on the other battery to accommodate the adjacent post assemblies, such that the distance between the batteries is minimized, which is beneficial to increase the energy density of the battery assembly.
  • FIG. 2 For the specific structure of the first recess 11 on the first battery body 10 and the second recess 41 on the second battery body 40.
  • the first post assembly 20 may protrude from the first battery body 10, or may be accommodated in the first battery body 10. That is, a groove may be provided in the first battery body 10 to accommodate the first post assembly 20.
  • the second post assembly 50 may protrude from the second battery body 40, or may be accommodated in the second battery body 40. That is, a groove may be provided in the second battery body 40 to accommodate the second post assembly 50.
  • the battery assembly may further include a third battery.
  • a third battery There may be one or at least two third batteries, and the structure of the third battery is similar or completely the same as the first battery 1 and the second battery 2. The details are not repeated herein.
  • the length of the first battery 1 is d, 400mm ⁇ d ⁇ 2500mm, the width of the first battery 1 is e, and the height of the first battery 1 is f, 2e ⁇ d ⁇ 50e, and/or 0.5f ⁇ e ⁇ 20f.
  • the length of the second battery 2 is d, 400mm ⁇ d ⁇ 2500mm, the width of the second battery 2 is e, and the height of the second battery 2 is f, 2e ⁇ d ⁇ 50e, and/or 0.5 ⁇ e ⁇ 20f.
  • the ratio of the battery length to the width is relatively large, and furthermore, the ratio of the battery width to the height is relatively large.
  • the length of the first battery 1 is d
  • the width of the first battery 1 is e
  • the height of the first battery 1 is f, 4e ⁇ d ⁇ 7e, and/or 3f ⁇ e ⁇ 7f. That is, the ratio of the battery length to the width of the battery in this embodiment is relatively large, thereby increasing the energy density of the battery and facilitating the subsequent formation of a battery assembly.
  • the length of the second battery 2 is d
  • the width of the second battery 2 is e
  • the height of the second battery 2 is f, 4e ⁇ d ⁇ 7e, and/or 3f ⁇ e ⁇ 7f.
  • the length of the first battery 1 and/or the second battery 2 may be 500mm to 1500mm
  • the width of the first battery 1 and/or the second battery 2 may be 80mm to 150mm
  • the height of the first battery 1 and/or the second battery 2 may be 15mm to 25mm.
  • the first battery 1 is a laminated battery
  • the second battery 2 is a laminated battery, which is not only convenient for forming but also can be processed to obtain a longer battery.
  • the cell 14 is a laminated cell.
  • the cell 14 has a first pole piece, a second pole piece having electrical property opposite to that of the first pole piece, and a diaphragm piece disposed between the first pole piece and the second pole piece.
  • the first pole piece, the second pole piece and the diaphragm piece are stacked together, such that multiple pairs of the first pole pieces and the second pole pieces are stacked together to form a laminated cell.
  • the first battery 1 and/or the second battery 2 may be wound batteries. That is, the first pole piece, the second pole piece having electrical property opposite to that of the first pole piece, and the diaphragm piece disposed between the first pole piece and the second pole piece are wound to obtain a wound cell.
  • the battery assembly mentioned above may be a battery module or a battery pack.
  • An embodiment of the present disclosure also provides a battery pack including the battery assembly mentioned above.
  • the battery assembly of the battery pack includes a first battery 1, a second battery 2, and a busbar 30, and the busbar 30 makes the electrical connection between the first battery 1 and the second battery 2.
  • the first post assembly 20 is disposed on the large surface of the first battery body 10
  • the second post assembly 50 is disposed on the large surface of the second battery body 40
  • the busbar 30 has a U-shaped structure, such that it is convenient to make the connection between the first post assembly 20 and the second post assembly 50.
  • the battery pack includes at least two assembled batteries
  • the battery pack may also include a box in which the at least two assembled batteries are disposed.
  • An embodiment of the present disclosure also provides an assembling method of a battery assembly. Please refer to FIG. 7 , the assembling method of the battery assembly includes the following steps.
  • the assembling method of the battery assembly makes the electrical connection of the first battery 1 and the second battery 2 through the busbar 30. Since the busbar 30 is an integrated U-shaped structure, it is convenient to make the connection between the first post assembly 20 and the second post assembly 50.
  • the first battery 1 further includes two opposite first surfaces 12, four second surfaces 13 disposed around the first surfaces 12, and a first post assembly 20.
  • the area of each of the first surfaces 12 is greater than the area of each of the second surfaces 13, and the first post assembly 20 is disposed on one of the first surfaces 12.
  • the second battery 2 also includes two opposite third surfaces 42, four fourth surfaces 43 disposed around the third surface 42, and a second post assembly 50.
  • the area of each of the third surfaces 42 is greater than the area of each of the fourth surfaces 43, and the second post assembly 50 is disposed on one of the third surfaces 42.
  • the one of the first surfaces 12 and the one of the third surfaces 42 are disposed opposite to each other, such that the first section 31 is located on a side of the one of the first surfaces 12 where the first post assembly 20 is provided, the third section 33 is located on a side of the one of the third surfaces 42 where the second post assembly 50 is provided, such that it is convenient to make the connection between the first section 31 and the first post assembly 20, and the connection between the third section 33 and the second post assembly 50.
  • the first post assembly 20 is disposed on the large surface of the first battery 1
  • the second post assembly 50 is disposed on the large surface of the second battery 2
  • the busbar 30 has a U-shaped structure, such that it is convenient to make the connection between the first post assembly 20 and the second post assembly 50.
  • first battery 1, the second battery 2, and the busbar 30 are not provided in a particular order.
  • connecting the first section 31 to the first post assembly 20 and connecting the third section 33 to the second post assembly 50 includes welding the first section 31 to the first post assembly 20, such that the second section 32 extends in a direction away from the first surfaces 12 of the first battery 1, placing one end of the second battery 2 between the first section 31 and the third section 33, and welding the third section 33 to the second post assembly 50.
  • the busbar 30 is welded to the first post assembly 20. That is, the welding position is larger such that it is more convenient for welding.
  • the busbar 30 as a whole is located on one side of the first battery 1, and then one end of the second battery 2 is placed in the U-shaped space formed by the busbar 30, such that the third section 33 and the second post assembly 50 directly face each other for the welding to be completed.
  • connecting the first section 31 to the first post assembly 20 and the third section 33 to the second post assembly 50 includes welding the first section 31 to the first post assembly 20, such that the second section 32 extends in a direction away from the first surfaces 12 of the first battery 1, placing the second battery 2 on the side of the third section 33 away from the first section 31, and wielding the third section 33 and the second post assembly 50. That is, the first post assembly 20 and the second post assembly 50 are directly opposed to each other, such that the busbar 30 is clamped between the first battery 1 and the second battery 2 to form welds, as shown in FIG. 9 .
  • the above-mentioned welding can be any kind of welding including laser welding, ultrasonic welding, and resistance welding.
  • first battery 1 and the second battery 2 please refer to the structure of the battery assembly mentioned above. The details are not repeated herein.
  • the assembling method of the battery assembly is adapted to form the battery assembly mentioned above.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)
EP21187077.9A 2021-05-14 2021-07-22 Ensemble batterie et procédé d'assemblage d'ensemble batterie Pending EP4089775A1 (fr)

Applications Claiming Priority (1)

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CN202110526810.0A CN115347327A (zh) 2021-05-14 2021-05-14 电池组及电池组的成组方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4254610A4 (fr) * 2021-10-22 2024-03-13 Contemporary Amperex Technology Co., Limited Batterie, dispositif électrique, procédé de préparation de cellule de batterie et dispositif

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120270097A1 (en) * 2010-12-13 2012-10-25 Shunsuke Yasui Battery module and battery pack
US20140017538A1 (en) * 2012-07-13 2014-01-16 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Battery pack
US20140205889A1 (en) * 2013-01-18 2014-07-24 Samsung Sdi Co., Ltd. Battery module
US20170170445A1 (en) * 2015-12-09 2017-06-15 Lg Chem, Ltd. Battery pack and method for manufacturing the same
US20180269445A1 (en) * 2016-03-02 2018-09-20 Contemporary Amperex Technology Co., Limited Battery module
KR20190106161A (ko) * 2018-03-08 2019-09-18 주식회사 엘지화학 외부 단락 방지 구조가 적용된 배터리 모듈을 이용한 배터리 팩
US20200176739A1 (en) * 2018-12-04 2020-06-04 Lg Chem, Ltd. Battery pack
EP3790080A1 (fr) * 2018-12-30 2021-03-10 Contemporary Amperex Technology Co., Limited Module de batterie et bloc-batterie

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5252836B2 (ja) * 2007-05-29 2013-07-31 三洋電機株式会社 パック電池
US8778530B2 (en) * 2010-09-10 2014-07-15 Samsung Sdi Co., Ltd. Battery and battery pack using the same
JP2013110039A (ja) * 2011-11-23 2013-06-06 Denso Corp 組電池
KR101528003B1 (ko) * 2012-08-28 2015-06-10 주식회사 엘지화학 전극 탭 상호 접속부재 및 이를 이용한 전기화학소자
US10497922B2 (en) * 2015-03-30 2019-12-03 Eliiy Power Co., Ltd. Pouch battery and assembled battery
KR102397857B1 (ko) * 2015-07-15 2022-05-12 삼성에스디아이 주식회사 이차 전지 및 이를 이용한 전지 모듈
KR102396361B1 (ko) * 2015-08-18 2022-05-10 삼성에스디아이 주식회사 배터리 팩
KR102397218B1 (ko) * 2015-08-27 2022-05-12 삼성에스디아이 주식회사 배터리 팩
JP2017228497A (ja) * 2016-06-24 2017-12-28 株式会社東芝 組電池用バスバー及び組電池
CN109328407B (zh) * 2016-06-29 2022-01-04 松下知识产权经营株式会社 电池块以及电池模块
CN208045556U (zh) * 2018-04-25 2018-11-02 深圳市比克动力电池有限公司 一种电池组连接结构
CN111384353B (zh) * 2018-12-29 2024-10-15 宁德时代新能源科技股份有限公司 二次电池以及电池模组
CN111384336B (zh) * 2018-12-30 2024-10-18 宁德时代新能源科技股份有限公司 一种电池模块、电池包及车辆
CN209747621U (zh) * 2019-05-13 2019-12-06 宁德时代新能源科技股份有限公司 电池模组
CN210092179U (zh) * 2019-07-26 2020-02-18 宁德时代新能源科技股份有限公司 电池模组、电池包和车辆

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120270097A1 (en) * 2010-12-13 2012-10-25 Shunsuke Yasui Battery module and battery pack
US20140017538A1 (en) * 2012-07-13 2014-01-16 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Battery pack
US20140205889A1 (en) * 2013-01-18 2014-07-24 Samsung Sdi Co., Ltd. Battery module
US20170170445A1 (en) * 2015-12-09 2017-06-15 Lg Chem, Ltd. Battery pack and method for manufacturing the same
US20180269445A1 (en) * 2016-03-02 2018-09-20 Contemporary Amperex Technology Co., Limited Battery module
KR20190106161A (ko) * 2018-03-08 2019-09-18 주식회사 엘지화학 외부 단락 방지 구조가 적용된 배터리 모듈을 이용한 배터리 팩
US20200176739A1 (en) * 2018-12-04 2020-06-04 Lg Chem, Ltd. Battery pack
EP3790080A1 (fr) * 2018-12-30 2021-03-10 Contemporary Amperex Technology Co., Limited Module de batterie et bloc-batterie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4254610A4 (fr) * 2021-10-22 2024-03-13 Contemporary Amperex Technology Co., Limited Batterie, dispositif électrique, procédé de préparation de cellule de batterie et dispositif

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